Social Security fax numbers in Wisconsin: 26 field offices
Social Security has 26 field offices in Wisconsin. The fax numbers below come from SSA’s own field-office directory, read 2 months ago · 09-02-2026. Find the office handling your case, then send your documents from your phone.
Use your Social Security notice to find which office has your case. Social Security has moved almost every office to a toll-free fax line, so if your notice prints an older number, the one here is the more recent of the two.
Official source · From the Social Security field-office directory, read 2 months ago · 09-02-2026.
| Office | Fax number | Last verified | Verified by |
|---|---|---|---|
| Appleton | (833) 596-0603 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Eau Claire | (833) 950-3743 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Fond Du Lac | (833) 950-3741 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Green Bay | (833) 950-3739 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Greenfield | (833) 902-2648 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Janesville | (833) 596-0597 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Kenosha | (833) 596-0599 Fax this number | 2 months ago · 09-02-2026 | Official website |
| La Crosse | (833) 950-3747 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Lancaster | (833) 597-0056 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Madison | (833) 950-3737 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Manitowoc | (833) 902-2684 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Marinette | (833) 597-0058 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Milwaukee Downtown | (833) 596-0601 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Milwaukee North | (833) 950-3735 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Milwaukee-West | (833) 580-0157 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Mount Pleasant/racine | (833) 950-3745 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Oshkosh | (833) 596-0595 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Portage | (833) 950-2495 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Rhinelander | (833) 950-2186 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Rice Lake | (833) 950-2190 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Sheboygan | (833) 950-3751 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Superior | (833) 596-0593 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Waukesha | (833) 597-0052 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Wausau | (833) 950-3749 Fax this number | 2 months ago · 09-02-2026 | Official website |
| West Bend | (833) 950-3065 Fax this number | 2 months ago · 09-02-2026 | Official website |
| Wisconsin Rapids | (833) 597-0054 Fax this number | 2 months ago · 09-02-2026 | Official website |
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